Eye color depends on how much melanin is in the iris.
Red Eyes: Causes and Treatment for Bloodshot Eyes, Eyes
Eye Color Genetics - All About Vision
Central Heterochromia (2 Eye Colors): Causes & Treatments
If you have blue eyes, they're actually brown and you just don't realize it
Those bright headlights aren't just annoying, they're bad for your eyes
Eye color percentages around the world and what causes eye color
39 Celebrities With Different-Colored Eyes - Famous People With Heterochromia Iridum
What colour are your eyes? Teaching the genetics of eye colour & colour vision. Edridge Green Lecture RCOphth Annual Congress Glasgow May 2019
Why Humans Don't Have Black Eyes / Bright Side
How to have blue eyes if neither of my parents or grandparents have blue eyes - Quora
The Human Pantone Project Body photography, Skin color, Human
Pediatric Vision Development Center
